We have a 2 family house with family in the upstairs apartment. We have been having a strange electrical issue we cant figuye out. The upstairs apartment lights have been dimming on a regular basis. Seems to be hapening about every hour and lasts from 1 to 3 minuits with the dimming about everey 5 to 10 seconds. When the dimming happens there is a hum in the meters.. Hum feels stronger in our meter for downstairs. But the drain is happening upstairs. We have replaced the breakers for the ac for both apartments...didnt help. Electrician sugested it could be a loose or coroded neutral or meter socket.. We have had the utility company come & re-do the netural at the house & the pole as well as the next dor neighbors neutral just to be safe. He said they where pretty bad. ?Sadly...Didnt fix the issue...next was the meters. He said we have a good 240 coming in..but alas the issue was not happening when he was there making troubleshooting nearly imposible.. They replaced the meters..and Its still happening. We are at a complete loss.. What do we do next! There is a bridal outside connecting my house & the neighbors to the poll. (so the one poll is supplying both houses - a total of 5 units between the 2 houses) the tech doing the meters asked if they where running excessive appliances.. But we have no idea of that.. The upstairs just had a new pannel installed & new pot lights installed about 6 months ago. Our apartment downstairs had all new wiring & a new panel installed 2 years ago. This issue has been happening for about 2 months now..they said upstairs that it was very mild when it started but has gotten worse the last 2 weeks. They just told me about it 5 days ago...so yea..5 days now dealing with trying to ferret this issue out. utility company has been here twice now.. & still no luck resolving this. I want this fixed asap.. We have had one housefire already (4 years ago).. Now, with this electrical issue.. Im terified of it causing a fire.. Granted I may just be parinoid & assuming the worst because of my past.. But this is really starting to freak me out. Any advice would be gratefully appreciated.